Ok Here Ya Go.. PLUGANDPRAY and DRAKENUKEM seemed weird to use, but
this is what they say in the docs.

ENTERSANDMAN = God Mode
NEUROTECH = Free Life
DRAKENUKEM = Refills Time
PLUGANDPRAY = Free Smart Bomb
RADIOHEAD = Finishes Level
ONEREALITY = Refills Life
COLIN        = Increase To 20 Lives
ROCKETZRULES = 5000 Points
IDKFA        = Reduced To One Life And Very Low Health
DEBUG        = Numbers Displayed On Screen
KIERAN       = ?
SKYNEWS      = ?